Cysts are closed sacs or pouches that contain fluid or solid material. They are usually the result of embryonic developmental anomalies. A cyst may develop from an obstruction or possibly an infection.
The location of the cyst and its contents will determine what it is called:
- Branchial cleft cyst: Found along the side of the neck and has a mucoid discharge
- Dermoid cyst: Commonly found on the head, neck, and groin. The cyst may contain sebaceous material--the basic elements of hair, teeth, and skin.
- Thyroglossal duct cyst: Found in the middle of the neck, and contains mucus